docs: def read_separated_lines_with_first_key(path: str, separator: str = ' ', max_columns: int = -1,
                                          keep_empty: bool = False):
      """
      Reads the separated lines of a file and return a dictionary with the first column as keys, value
      is a list with the rest of the columns.
  
      Parameters:
          path (str): Path to the file to read.
          separator (str): Separator that is used to split the columns.
          max_columns (str): Number of max columns (if the separator occurs within the last column).
          keep_empty (bool): If True empty columns are returned as well.
  
      Returns:
          dict: Dictionary with list of column values and first column value as key.
      """
      gen = read_separated_lines_generator(path, separator, max_columns, keep_empty=keep_empty)
  
      dic = {}
  
      for record in gen:
          if len(record) > 0:
              dic[record[0]] = record[1:len(record)]
  
      return dic